Method cleanup

app/src/main/java/eu/faircode/email/SimpleTask.java:395–404

(Context context)

    }

    private void cleanup(Context context) {
        started = 0;
        reported = false;
        future = null;
        synchronized (tasks) {
            tasks.remove(this);
        }

        updateTaskCount(context);
    }

    private void updateTaskCount(Context context) {
        // Check tasks